CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology

136 Revised 7/22/09 (Gentry/Ranallo)
o. You must straighten the Axis line by grabbing the boxes at either end to split the
brain into two equal hemispheres.
p. After you have done this, hold the control key down and click on all ROI’s and the axis line.
This will turn them all green. Go back to the symmetry button and there is a little black tab,
open that and click on that button. This will place the ROI’s on the left side. Now you are
ready to film.
q. In the upper left port, right mouse click and save view.
r. In the upper right port go outside yellow box and right mouse click and save view. After
doing that there are some numbers in red at the top and bottom left of the grid. Grab the
numbers at the top and middle mouse scroll to the left. This should move your 1 and 2
graph up and out of the yellow box and bring the ROI’s you just created up in view. If it
doesn’t, you can also grab the numbers at the bottom and bring them up. Once they are in
view right mouse click and click on multiple graphs. This will show them in a nice graph.
s. Go out of the yellow box again and save view.
t. Place your cursor in the lower right port and on your keyboard hit the key with the (?/).
This will bring up all 4 views at once. Now you can film them in order without having to
change each one. Film Mean Transit Time first, then Blood Flow, Blood Volume, and
Permeability Surface.
u. Go Back up to your upper left port and hold down the control key and click on your ROI’s
to turn them green. Hit CTRL-C to copy. Go to the image location and right mouse click to
go to the next level. This will take a minute to process. Once it is done, Hit CTRL-V to
paste or you can also use the right click menu.
v. Now all ROI’s will be in the same spot as before. You may need to move them just a hair if
they get too close to bone or a big blood vessel but otherwise try to leave them in the
same spot.
w. Now repeat all filming. Upper left port first, upper right port next, Mean Transit Time, Blood
Flow, Blood Volume, Permeability Surface. This time when you finish you just click on the
next level. You don’t need to copy again because you have already done it once. If you
move them a lot you will need to make them green again and recopy. When you get to the
third level, CTRL-V or right click to paste your ROI’s, adjust them if necessary, then film.
x. After you have done all four/eight levels, click on film/save.
Choose Functional Data and
hit save. This will bring up a graph to the right called functional data. Click next until the
button goes gray, and go back to the film/save box and click save again.
y. Now you can exit and go back to the patient list. Send to ALI-STORE.
1. CTRL-C copy
2. CTRL-V or right click menu to paste
3. CTRL-X cut
4. CTRL and click to make ROI’s green